Pension and Other Post-retirement Benefits Schedule of Allocation of Plan Assets (Details) - USD ($)	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan Assets	$ 471,200,000	$ 458,500,000	$ 634,600,000
Defined Benefit Plan, Equity Securities [Member] \| Minimum
Defined Benefit Plan Disclosure [Line Items]
Target range (1)	23.90%
Defined Benefit Plan, Equity Securities [Member] \| Maximum
Defined Benefit Plan Disclosure [Line Items]
Target range (1)	33.90%
Defined Benefit Plan Equity Securities Global Low \| Minimum
Defined Benefit Plan Disclosure [Line Items]
Target range (1)	3.40%
Defined Benefit Plan Equity Securities Global Low \| Maximum
Defined Benefit Plan Disclosure [Line Items]
Target range (1)	13.40%
Defined Benefit Plan, Non Equity Securities \| Minimum
Defined Benefit Plan Disclosure [Line Items]
Target range (1)	19.70%
Defined Benefit Plan, Non Equity Securities \| Maximum
Defined Benefit Plan Disclosure [Line Items]
Target range (1)	29.70%
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan Assets	$ 471,200,000	458,500,000	$ 634,600,000
Pension Benefits \| Total
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan Assets	471,200,000
Pension Benefits \| Total
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan Assets	458,500,000
Pension Benefits \| Defined Benefit Plan, Equity Securities, US, Large Cap [Member] \| Total
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan Assets	105,500,000	99,400,000
Pension Benefits \| Defined Benefit Plan, Equity Securities, US, Small Cap [Member] \| Total
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan Assets	28,700,000	25,400,000
Pension Benefits \| Defined Benefit Plan, Equity Securities, Non-US, All Cap [Member] \| Total
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan Assets	51,300,000	50,700,000
Pension Benefits \| Defined Benefit Plan, Equity Securities, Non-US Small Cap [Member] \| Total
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan Assets	23,100,000	22,400,000
Pension Benefits \| Emerging markets \| Total
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan Assets	$ 39,300,000	39,700,000
Pension Benefits \| Defined Benefit Plan, Real Estate [Member] \| Minimum
Defined Benefit Plan Disclosure [Line Items]
Target range (1)	3.00%
Pension Benefits \| Defined Benefit Plan, Real Estate [Member] \| Maximum
Defined Benefit Plan Disclosure [Line Items]
Target range (1)	13.00%
Pension Benefits \| Defined Benefit Plan, Real Estate [Member] \| Total
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan Assets	$ 40,400,000	49,000,000.0
Pension Benefits \| Defined Benefit Plan, Fixed Income Securities [Member] \| Minimum
Defined Benefit Plan Disclosure [Line Items]
Target range (1)	25.00%
Pension Benefits \| Defined Benefit Plan, Fixed Income Securities [Member] \| Maximum
Defined Benefit Plan Disclosure [Line Items]
Target range (1)	35.00%
Pension Benefits \| Defined Benefit Plan, Cash and Cash Equivalents [Member] \| Minimum
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets Target Allocation	$ 0
Pension Benefits \| Defined Benefit Plan, Cash and Cash Equivalents [Member] \| Maximum
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets Target Allocation	5.0
Pension Benefits \| Defined Benefit Plan, Cash and Cash Equivalents [Member] \| Total
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan Assets	4,800,000	4,900,000
Pension Benefits \| Defined Benefit Plan, Aggregate Securities [Member] \| Total
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan Assets	46,600,000	45,300,000
Pension Benefits \| Defined Benefit Plans, Aggregate Securities, Core Plus [Member] \| Total
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan Assets	93,000,000.0	83,700,000
Pension Benefits \| Defined Benefit Plan Equity Securities Global Low \| Total
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan Assets	$ 38,500,000	$ 38,000,000.0